docs: add support us section

Author: yanglbme

README.md

@@ -224,19 +224,17 @@ graph TD;
 
 <a href="https://github.com/doocs/leetcode/graphs/contributors" target="_blank"><img src="https://contrib.rocks/image?repo=doocs/leetcode&max=500" /></a>
 
-## 赞助者
-
-感谢以下个人、组织对本项目的支持和赞助！
-
-<a href="https://opencollective.com/doocs-leetcode/backers.svg?width=890" target="_blank"><img src="https://opencollective.com/doocs-leetcode/backers.svg?width=890"></a>
+## 版权
 
-<a href="https://opencollective.com/doocs-leetcode/sponsors.svg?width=890" target="_blank"><img src="https://opencollective.com/doocs-leetcode/sponsors.svg?width=890"></a>
+本项目著作权归 [GitHub 开源社区 Doocs](https://github.com/doocs) 所有，商业转载请联系 @yanglbme 获得授权，非商业转载请注明出处。
 
-> "_You help the developer community practice for interviews, and there is nothing better we could ask for._" -- [Alan Yessenbayev](https://opencollective.com/alan-yessenbayev)
+## 支持我们
 
-## 版权
+如果你觉得这个项目对你有帮助，欢迎通过下方的二维码请我们喝一杯 ☕️～
 
-本项目著作权归 [GitHub 开源社区 Doocs](https://github.com/doocs) 所有，商业转载请联系 @yanglbme 获得授权，非商业转载请注明出处。
+<div align="center">
+  <img src="./images/support1.jpg" width="260px" />
+</div>
 
 ## 联系我们
 

README_EN.md

@@ -216,20 +216,15 @@ This project exists thanks to all the people who contribute.
 
 <a href="https://github.com/doocs/leetcode/graphs/contributors" target="_blank"><img src="https://contrib.rocks/image?repo=doocs/leetcode&max=500" /></a>
 
-## Backers & Sponsors
-
-Thank you to all our backers and sponsors!
-
-<a href="https://opencollective.com/doocs-leetcode/backers.svg?width=890" target="_blank"><img src="https://opencollective.com/doocs-leetcode/backers.svg?width=890"></a>
-
-<a href="https://opencollective.com/doocs-leetcode/sponsors.svg?width=890" target="_blank"><img src="https://opencollective.com/doocs-leetcode/sponsors.svg?width=890"></a>
-
-> "_You help the developer community practice for interviews, and there is nothing better we could ask for._" -- [Alan Yessenbayev](https://opencollective.com/alan-yessenbayev)
-
 ## Copyright
 
 The copyright of this project belongs to [Doocs](https://github.com/doocs) community. For commercial reprints, please contact [@yanglbme](mailto:contact@yanglibin.info) for authorization. For non-commercial reprints, please indicate the source.
 
+## Support Us
+
+If you find this project helpful, consider supporting us by buying us a coffee ☕️  
+👉 [https://paypal.me/yanglbme](https://paypal.me/yanglbme)
+
 ## Contact Us
 
 We welcome everyone to add @yanglbme's personal WeChat (WeChat ID: YLB0109), with the note "leetcode". In the future, we will create algorithm and technology related discussion groups, where we can learn and share experiences together, and make progress together.